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Scalable NAS with SSD cache acceleration capability
DS920+ provides two built-in M.2 SSD slots so that you can take full advantage of Synology SSD Cache functionality

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Versatile 2-bay NAS for small offices and home users
64-bit quad-core processor delivering sequential throughput at over 112 MB/s reading and 112 MB/s writing

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A versatile entry-level 2-bay NAS for home and personal cloud storage
Over 113 MB/s reading, 112 MB/s writing

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2-bay NAS with optimal multimedia solution for home users
4K video transcoding on the fly with 10 bit H.265 codec support

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2-core 2.0 GHz Processor, burst up to 2.9 GHz and boosts photo indexing, database response times, and web PHP response efficiency – average 15% boost to computing-intensive applications
Access multimedia content anytime, anywhere through an intuitive web-based interface

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Average 15% performance boost to photo indexing and other computing-intensive operations, as well as database response time
Built-in M.2 2280 NVMe SSD slots permit cache acceleration without occupying storage drive bays

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4-bay home NAS with over 60 TB raw capacity support, suitable for data backup and file sharing
64-bit 4-core 1.4 GHz processor and 1 GB DDR4 memory

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2x M.2 SSD slots for SSD ́s
2 x 3.5″ or 2.5″ SATA HDD/SSD